Introducing the sealing principle of fixed ball valve and the calculation of seat sealing force, analyzing the effect of machining error upon sealing property and putting forward improving opinions.
2
威廉姆森固定球阀一般采用球前阀座密封结构。
In general, WILLIAMSONs trunnion ball valve features the front ball sealing design structure.
3
该球阀阀前、阀后阀座都能密封，即所谓双向密封特性，利用自带的排放阀，阀体中腔可向外排放。
The ball valve before the valve can be closed after the valve seat, the so-called two-way sealing characteristics, the use of built-in discharge valve, the valve body cavity may be out emissions.
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